See also:

Opening/closing the garage door
Once programmed, the integrated remote control will assume the function of the garage door system's remote control. Please also read the operating instructions for the garage door system. X T ...

Mercedes-Benz M-Class Owners Manual
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RACETIMER
Displaying and starting RACETIMER WARNING The RACETIMER feature is only for use on roads and in conditions where high speed driving is permitted. Racing on public roads is prohibited under a ...